Inspector Shankar  is assigned to investigate the mysterious death of Sunder Singh , whose ship wrecks on a stormy night. Sunder was off to marry Sheila , the daughter of his mother's  childhood friend who had long died. Sheila was raised by her father, who dies of heart attack when he comes to know of Sunder's death. Sunder's mother decides to take Sheila to live with her. In denial of her son's death, Sunder's mother keeps doing various acts in madness. She keeps serving food for Sunder, talk with his photos, keeps feeling that her son has returned, etc. Meanwhile Shankar and Sheila fall in love. But in her madness Sunder's mother starts preparations of Sunder's wedding with Sheila. Sunder's face-burnt body is found and the mystery continues whether his death was an accident or a murder.